Ceiling-tie.



A. I. WIDIVIER.

CEILING TIE.

APPLICATION FILED JAN: 241 Igl. l 1,251,155@ Mten'ted Dec. 25, 1917.

2 SHEETS-SHEET 2'.

ARTHUR J. IVIDMER, 0F WEBSTER GROVES, MISSOURI, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO WIDMER ENGINEERING COMPANY, OF ST. LOUIS, MISSOURI, A CORPO- RATION OF MISSOURI.

CEILING-TIE.

Specification of Letters Patent.

Patented Dec. 25, 19a?.

Application filed `Tanuary 24, 1916. Serial No. 73,902.

'l 'o all fui/wm, t may concern:

Be it known that l, ARTHUR J. VIDMER, i. citizen of the United States, and a .resident of lVebster Groves, in the county of St. Louis and State of Missouri, have invented a new and useful Improvement in Ceiling Ties, of which the following is a specification.

This invention relates particularly to reinforced concrete floors having ceilings made of plaster board or other thin plates, and it consists in a simple and ciiective anchor or tie for suspending the ceiling boards from the concrete.

The object of the invention is to provide for attaching the ceiling boards to the under side of the concrete lloor after the floor forms have been removed. Further objects are to simplify the construction of the forms to expedite the placing of the forms and ties preparatory to pouring the concrete, and to overcome the etfcct of slight mis-alinement in the forms and ties with respect to the ceiling boards.

This invention contemplates that the concrete floor shall be /laid on wooden or metal forms in the usual way, the ties being placed on the forms prior to pouring the concrete so as to be partly embedded in the floor. After the forms have beenv removed, the suspender portions of the ties are exposed beneath the floor, and the plasterers can readily attach the ceiling boards and plaster the ceiling.

Further objects and advantages of the invention appear' in the following descriptionl of the embodiments of the invention shown in the accompanying drawings; and what the invention consists in is more particularly defined in the appended claims.

In the drawings, wherein the same reference characters designate like parts in the several views,

Figure 1 is a perspective view and crosssection of a partly completed floor embodying one form of the invention;

Fig. 2 is an enlarged cross-section of the finished floor taken crosswise of a. rib, showing the ceiling boards but not the plaster;

Fig. 3 is a perspective View of a, ceiling tie consisting of a rigid anchor block and a flexible suspender;

Fig. 4 is a bottom View of the floor and ceiling shown in Fig. 2;

Fig. 5 is a view similar to Fig. 1 or' a `modified construction;

Fig. 6 is an enlarged cross-section of a finished floor of the kind illustrated in Fig. 5, showing the ceiling boards but not, the plaster, the view beingtaken crosswise of a rib; and

Figs. 7 and 8 are perspective views, partly in cross-section, of other modifications of the invention, looking at the under side oi the ceiling prior to plastering.

In the floor construction illustrated in Figs. 1 to 1l, the floor slab 'l0 consists of a thin concrete plate for its upper portion and reinforced concrete ribs integral therewith projecting down from theA plate, although the invention is not restricted to ribbed floors. Reinforcing bars l1 are embeddedI in the bottom region of each rib, together' with the ties for supporting the ceiling boards 12. The ties .consist of concrete anchor blocks 13 and wire Suspenders 14, the anchor blocks having recesses in their under sides to receive the lower end of the sus-` penders during the construction of the floor, and to permit the Suspenders to swing sidewise to adjust themselves to the ceiling boards. The reinforcing bars 11 rest on the" Aanchor blocks, and the upper ends of the suspender Wires project through the anchor blocks and'are twisted around the reinforcing hars to hold them in place during the pouring of the concrete in the floor. The ceiling boards are spaced apart at their edges to provide a means of keying the plaster, and are supported by metal plates 15 spanning under their edges. The plates 15 are supported by the Suspenders 14, which hang down between the edges of the ceiling boards or go through holes in the ceiling boards.

The oor may be constructed on a wooden falsework 16, upon which suitable hollow centers 17 of inverted channel shape are arranged end to end in rows, the rows being spaced apart to form the licor ribs between them. The anchor blocks are arranged between the side walls of adjacent hollow centers, the length of the blocks being equal to the width of the spaces between the rows for the concrete ribs; so that the blocks serve to keep the centers at the proper distance apart during the construction of the floor. The reinforcing bars are laid on the anchor blocks and wired to them by means of the upper ends of the suspended wires. The lower ends of the suspender wires are housed during construction of the ioor in the recesses in the under sides of the anchor blocks; and after the fioor concrete has been poured and hardened and the falsework has been removed, 'thelower ends 'of the wires are bent down tgyproject between the ceiling boards. Th'hollow centers 17 if made of metal tilpf'inay be left in place, or they may be removed with the Wooden falsework. The :ceiling boards and plaster are applied from below after the falseworlr has been removed.

The fioor and ceiling construction illus-- trated in Figs. 5 and 6 is similar to that described above. The ties consist of sheet or rolled metal spacing or anchor strips 18 to 'which are secured wire Suspenders 19 at intervals. The anchor strips are channel or angle 'shape in cross-section, and are arranged withtheir edges down, resting on ,th'efalsework between the metal centers. The Suspenders pass through holes in the apex or angle of the anchor strip, and have loeps or free upper ends which are einbedded in the concrete of the ribs. During the concreting, the lower ends of thel suspenders are housed in the spaces under the Spacer strips above the falsework.

In the construction illustrated in Fig. 7 the Suspenders 2() are embedded in concrete anchor blocks 2l which are larger at the top than at the bottom and thereby are keyed. in the concrete of the completed iioor. The construction illustrated in Fig. 8 has suspenders 22 with loops or free upper ends for embedding in the concrete. The Suspenders are supported by metal boxes or anchors 23, which are spaced lengthwise of the ribs at suitable intervals for supporting the ceiling boards. The plates 2li which support the ceiling boards in the construction shown in Fig. 7 have slots or notches on opposite sides for the Suspenders to fit into; and in the construction shown in Fig. 8 the supporting plates 25 have slots or holes through them for the Suspenders; but plates without notches or holes may be used.

The invention is not restrictedto the particular materials mentioned, nor jto the precise details of the parts and type of construction shown and described.

I claim the following as my invention:

l. A tie for suspending a ceilingvfrom a conerete ioor, said tie comprising a rigid portion adapted to be embedded in the under edge of the concrete, and a liexible suspender supported thereby and' projectii'ig" below the concrete, said rigid portion having a recess in itsA under side for housing said suspender during thecon'struction of the floor.

2. A tie for suspending a ceiling from a concrete floor, said tie comprising a rigid.

portion adapted to be embedded in the under edge of the concrete, a exible suspender supported thereby and 'projecting below the concrete, said rigid portion having a recess in its under side for housing said suspenderV during the construction of the floor, the up'- per end of said suspender projecting above said rigid portion to be body of the concrete.

3. A ceiling construction comprising longitudinal spacing and supporting members having their lower edges spaced apart in a.

embedded 'the horizontal plane, ceiling boards arranged bel porting members having their lower edges' parallel to each other in a horizontal plane,

ceiling boards arranged below said sup-l porting members, the edges ofV said ceiling boards resting against the lower edges of said supporting members, flexible suspenders secured to' said supporting members and extending between and depending below said' ceiling boards, said supporting members having recesses in their under sides for housing said flexible Suspenders during the construction of the floor, and plates arranged below said boards in position to be engaged by said Suspenders, said Suspenders .securing said plates and boards against the lower edges of said supporting members.

A concrete ioor construction comprising a trough shape spacing member embedded in the under side of thii'loor'with its open side down7 in combination with a ceiling suspended from said door and a flexible member for supporting said ceiling, said flexible member being suspended ,rom said floor within said trough with its.Y ver end passing tliriugh an opening in said ceiling whereby it can accommodate itselfto the relative position or' said ceiling with respect to said spacing member.

G. ,A concrete floor construction comprising a spacing member having'` a recess in its under side embedded in the under side of the H001' with its open side down, in Combination with .a ceiling suspended from said oor and a. exible member supporting said ceiling, said exble member being suspended from said oor Within said recess Whereby its free end is ajustable sdewse to suit the lateral position of said ceiling with respect to said spacing member. l@

Signed at St. Louis, l/Iissoui9 this 20th day of January, 191.6.

ARTHUR J. WIDMER. 

